In 2025, 175 US girls were named Cassie, making it the 1,280th most common girls’ name of the year, down 10 places from #1,270 in 2024. That is 8 fewer than the 183 girls named Cassie in 2024. Its best rank for girls was #137, reached in 1982. That year also had the most girls given the name: 2,193. For comparison, it was #1,260 in 2015 and #758 in 1950.
Social Security card records list Cassie in every one of the 146 years from 1880 to 2025; in 1880 there were 33 babies with the name. In all, 47,027 US babies have been given the name, 99% of them girls and 0.8% boys. Its busiest decade was the 1980s, with 15,851 babies named Cassie.
Over the 10 years from 2016 to 2025, 1,886 US girls were named Cassie; the busiest of those years was 2016, with 212. In 2025 that was about 1 in 9,184 of the girls in SSA’s list for the year.
Among the states, Cassie ranked highest in New Mexico in 2025, at #318 for girls there. It was not in the top 100 of any state. Related spellings in the SSA files include Kassie (7,034 babies since 1880), Casie (4,818 babies since 1880), Kasie (4,223 babies since 1880) and Cassi (2,361 babies since 1880). Rarer spellings such as Kaysie, Kassia and Caysie are summarised on this page. The open nickname list we use links it to Cass.